Image sensor and compensation method thereof
US9350927B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2101/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor is provided. The image sensor includes a pixel array, an analog-to-digital converter, and a processor. The analog-to-digital converter converts a black level reference signal and a pix signal from the pixel array into a first digital signal and a second digital signal, respectively. The processor obtains a black level reference value according to the first digital signal, and obtains a compensation coefficient according to the black level reference value, a maximum digital level of the analog-to-digital converter and a full signal range value. The processor obtains pix data according to the compensation coefficient, the black level reference value and the second digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.